Random Spin-1 Quantum Chains

Beatriz Boechat; Andreia Saguia; Mucio Continentino

doi:10.1016/0038-1098(96)00082-8

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arXiv · cond-mat/9602013

Random Spin-1 Quantum Chains

Beatriz Boechat·Andreia Saguia·Mucio Continentino

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Abstract

We study disordered spin-1 quantum chains with random exchange and biquadratic interactions using a real space renormalization group approach. We find that the dimerized phase of the pure biquadratic model is unstable and gives rise to a random singlet phase in the presence of weak disorder. In the Haldane region of the phase diagram we obtain a quite different behavior.

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Beatriz Boechat, Andreia Saguia, Mucio Continentino. 1996-02-02. Random Spin-1 Quantum Chains. https://doi.org/10.1016/0038-1098(96)00082-8

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